Networking

Network traffic monitor. Logs traffic for selected interfaces using kernel statistics. Daily, monthly, and per-interface reports.

Display bandwidth usage on an interface by host. Real-time view of active connections and their transfer rates. Essential for troubleshooting.

Small 'net top' tool. Groups bandwidth by process instead of by IP/protocol. Quickly identify which process is consuming bandwidth.

Active/passive ARP reconnaissance tool. Quickly discover hosts on a network segment. Useful for wireless networks and switched environments.

Passive TCP/IP stack fingerprinting tool. Identifies remote operating systems and applications without sending any probes.

Open-source web IP address management. Track subnets, IPs, VLANs, VRFs. REST API, PowerDNS integration, and automatic scanning.

Multi-protocol VPN software. Supports SSL-VPN, OpenVPN, L2TP, EtherIP, L2TPv3. High performance with enterprise features.

Zero-config VPN built on WireGuard. Mesh networking with MagicDNS, subnet routing, and exit nodes. Free for personal use.

Software-defined networking for planet Earth. Create virtual networks that connect devices anywhere. Peer-to-peer encrypted mesh.

WireGuard-based VPN with SSO, MFA, and granular access control. Easy to set up, self-hosted or cloud. Zero-trust network access.

Complete IPsec solution for Linux. Supports IKEv1, IKEv2, certificate and PSK auth, EAP, and many identity types. Standards-compliant.

Lightweight VPN daemon using tunnelling and encryption. Full mesh routing, automatic full mesh connectivity, and NAT traversal.

Scalable overlay networking tool by Defined Networks (Slack). Certificate-based, peer-to-peer, works across cloud providers.

Controller software for Ubiquiti UniFi network devices. Manage APs, switches, gateways. Device provisioning, analytics, and guest portal.

Linux-based operating system for embedded devices. Replaces stock firmware on routers. Package management, LuCI web interface, and extensive customization.

Linux-based firmware for wireless routers. Adds features like VPN, QoS, and advanced wireless settings to consumer routers.

Text-based serial port communication program. Essential for configuring routers, switches, and embedded devices via console cable.

Enhanced PuTTY fork with extra features. Sessions filter, auto-login, portability, transparency, and URL hyperlinks.

Windows GUI for managing multiple PuTTY SSH sessions. Tabbed interface, session import, and layouts. Wraps PuTTY in a modern UI.

TCP port scanner. Transmits 10 million packets per second. Scan the entire internet in under 6 minutes. Async design.

Fast single-packet network scanner. Designed for internet-wide surveys. Stateless scanning architecture for maximum speed.

Send ICMP echo requests to multiple hosts in parallel. Faster than ping for checking large numbers of hosts. Scriptable output.

Suite of SNMP tools including snmpget, snmpwalk, snmpset, snmptrap. The standard SNMP implementation for Unix/Linux systems.

Professional SNMP MIB browser and manager. Browse MIB trees, walk agents, receive traps, and edit MIB files.